Sauté onion, carrot, and bell pepper in a skillet for 3 minutes. Add ground beef and brown completely.
Stir in tomato sauce, spices, and water. Simmer until the sauce is thick and juicy.
Cut each tortilla in half. Place shredded mozzarella and a spoonful of beef filling on one side, then fold into a triangular pocket.
Whisk melted butter with garlic and herbs. Brush the bottom of a round baking dish and arrange the pockets in a circular pattern.
Brush the tops with remaining garlic butter, smother with extra mozzarella, and add a pinch of herbs.
Bake at 350 F (180 C) for 20-25 minutes until the cheese is melted, bubbly, and golden-brown. Serve hot!